def test_equals(self):
from mbed_tools.devices._internal.windows.usb_device_identifier import UsbIdentifier, KEY_UID
# Checks that two unset identifiers are equal
a = UsbIdentifier()
b = UsbIdentifier()
self.assertEqual(a, a)
self.assertEqual(a, b)
self.assertEqual(b, a)
# Checks that two different identifiers are not equal
a_dict = data_object_to_dict(a)
a_dict[KEY_UID] = generateUID()
b_dict = data_object_to_dict(a)
b_dict[KEY_UID] = generateUID()
a = UsbIdentifier(**a_dict)
b = UsbIdentifier(**b_dict)
self.assertEqual(a, a)
self.assertNotEqual(a.uid, b.uid)
self.assertNotEqual(a, b)
self.assertNotEqual(b, a)
# Checks that two identifiers with same fields are equal
b = UsbIdentifier(**a_dict)
self.assertEqual(a.uid, b.uid)
self.assertEqual(a, a)
self.assertEqual(a, b)
self.assertEqual(b, a)
# Checks that identifier and other type are not equal
self.assertFalse(a == 1)
def test_hashing(self):
from mbed_tools.devices._internal.windows.usb_device_identifier import UsbIdentifier, KEY_UID
# Generates two different USB identifiers
a = UsbIdentifier()
a_dict = data_object_to_dict(a)
a_dict[KEY_UID] = generateUID()
b_dict = data_object_to_dict(a)
b_dict[KEY_UID] = generateUID()
a = UsbIdentifier(**a_dict)
b = UsbIdentifier(**b_dict)
self.assertNotEqual(hash(a), hash(b))
self.assertNotEqual(a, b)
# Checks dictionary lookup
self.assertNotIn(a, dict())
self.assertNotIn(a, {b: ""})
self.assertIn(b, {b: ""})
# Creates c so that a and c have the same fields.
c = UsbIdentifier(**a_dict)
# Checks dictionary lookup
self.assertIn(c, {c: ""})
self.assertIn(a, {c: ""})